When a girl is grinding on a guy on the dance floor and accidentally leaves a pee stain on his pant leg. Similar to a snail trail.
That chick was totally getting me hot on the dance floor until she left a lemonade slide on my pants!
by filthy pirate hooker March 6, 2016

by mplshd October 20, 2021

When you snowboard up to a rail, but don't jump high enough to get on it, causing you to fall backwards and slide down the rail on your back.
"Dude, did you see that? I just grinded that rail on my back!"
"A spine slide?? That's more impressive than a real grind!"
"A spine slide?? That's more impressive than a real grind!"
by CCotua January 23, 2009

Sexual position involving two males and one female, one male in the back with his penis inserted into her anus, female in the middle, and the other male in the front with his penis in the females mouth. If the man in the back starts humping, the females mouth slides up the other mans dick, if she slides back, she falls into his dick, pretty simple.
by CoolSexMan1443 October 16, 2020

Two dicks in one hole thus the shafts of each penis would have to touch. The gyrating motion of sex would cause each shaft to slide past the other. This issue can happen on purpose or accident.
Micah and Tim were banging Cindy one in the pink and one in the stink when Micah slid out and instantly joined Tim in a sliding trombone
by wtf325! July 19, 2017

When you get completely naked and shove your balls in between your legs and sit on the floor like that and drag your self across the floor
by lilsavage81401 May 20, 2018

to punch someone so hard their feet slide out from under them and they fall to the ground leaving them to appear dead to bystanders.
by ClosingTag December 24, 2021
